Home / 3,128.53-4,693.60-1,180.75

Finding the Fourth Proportional to 3,128.53, 4,693.60 and 1,180.75

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Solution

The fourth proportional to 3,128.53, 4,693.60 and 1,180.75 is: 1,771.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.53 : 4,693.60 = 1,180.75 : x
  2. Step 2: Convert to fraction form
    3,128.53/4,693.60 = 1,180.75/x
  3. Step 3: Cross multiply
    3,128.53x = 4,693.60 × 1,180.75
  4. Step 4: Simplify right side
    3,128.53x = 5,541,957.94
  5. Step 5: Solve for x
    x = 5,541,957.94/3,128.53
  6. Step 6: Final answer
    x = 1,771.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.